200分求C#对串口编程的实例，要有中文注释！非常感谢！最近要做一个小程序，从8051单片机读取数据！

[Angelnet]

要循环读取16站，如果我有些时候有几站没用，怎么判断呢？非常感谢！
E_maiL:[e-mail]

[singlepine]

学习,给我也发一份吧 [e-mail]

[LearnerChou]

我也想要一份啊
[e-mail],谢谢pc_csharp(帮助别人,帮助自己)!

[zhaoqy0416]

收到的兄弟给我也发一份吧
[e-mail]

[doudoushen]

我也要
[e-mail]

[fifali_1018]

也给我来一份吧
[e-mail]

[lover1001]

我也想要啊!不知哪位大哥可以发我一份啊?
[e-mail]
谢谢!~~~~

[marvelstack]

看这里，三种方法
http://www.microsoft.com/china/MSDN/library/enterprisedevelopment/softwaredev/code4fun12102003.mspx

[jhyc]

来晚了，给我也来一份阿
[e-mail]

[阿土sap]

[e-mail]

[nga96]

there is chinese class
you can translate it into english

[dxjhq]

大哥还有吗？给一份

[e-mail]

[hawk234]

来一份
[e-mail]

[longge165]

pc_csharp(帮助别人,帮助自己)---这位兄弟，你能给我发一份吗?我的邮箱是：[e-mail]
谢谢！不胜感激！

大家一起顶啊！！

[eArt]

如果有可能的话

也麻烦大哥发给我一份

[e-mail]

[julong88]

可以直接使用API

[wokagoka]

得到二进制流了如何分析数据呀？？
……

[tensyy80]

终于有救了！！那位大哥给我发一份
[e-mail]
我正为这个发愁呢

[hunter_32]

using System;
using System.Runtime.InteropServices;
using System.Windows.Forms;

namespace printuseapi
{
public class writeLpt1
{
#region 申明要引用的和並口要調用的API
//win32 api constants
private const uint GENERIC_READ = 0x80000000;
private const uint GENERIC_WRITE = 0x40000000;
private const int OPEN_EXISTING = 3;
private const int INVALID_HANDLE_VALUE = -1;
private const uint FILE_FLAG_OVERLAPPED = 0x40000000; //異步通訊
private const int MAXBLOCK = 4096;

private const uint PURGE_TXABORT = 0x0001; // Kill the pending/current writes to the comm port.
private const uint PURGE_RXABORT = 0x0002; // Kill the pending/current reads to the comm port.
private const uint PURGE_TXCLEAR = 0x0004; // Kill the transmit queue if there.
private const uint PURGE_RXCLEAR = 0x0008; // Kill the typeahead buffer if there.

private const int EV_RXCHAR = 0x0001;

//private const uint EV_RXCHAR =

[StructLayout(LayoutKind.Sequential)]
private struct DCB
{
//taken from c struct in platform sdk
public int DCBlength;
public int BaudRate;
public int fBinary;
public int fParity;
public int fOutxCtsFlow;
public int fOutxDsrFlow;
public int fDtrControl;
public int fDsrSensitivity;


public int fTXContinueOnXoff;
public int fOutX;
public int fInX;
public int fErrorChar;
public int fNull;
public int fRtsControl;

public int fAbortOnError;
public int fDummy2;
public ushort wReserved;

public ushort XonLim;
public ushort XoffLim;
public byte ByteSize;
public byte Parity;
public byte StopBits;
public char XonChar;
public char XoffChar;
public char ErrorChar;


public char EofChar;
public char EvtChar;
public ushort wReserved1;
}

[StructLayout(LayoutKind.Sequential)]
private struct COMMTIMEOUTS
{
public int ReadIntervalTimeout;
public int ReadTotalTimeoutMultiplier;
public int ReadTotalTimeoutConstant;
public int WriteTotalTimeoutMultiplier;
public int WriteTotalTimeoutConstant;
}

[StructLayout(LayoutKind.Sequential)]
private struct OVERLAPPED
{
public int Internal;
public int InternalHigh;
public int Offset;
public int OffsetHigh;
public int hEvent;
}

[hunter_32]

[StructLayout(LayoutKind.Sequential)]
private struct COMSTAT
{
/*public int fCtsHold;
public int fDsrHold;
public int fRlsdHold;
public int fXoffHold;
public int fXoffSent;
public int fEof;
public int fTxim;
public int fReserved;
public int cbInQue;
public int cbOutQue;*/
// Should have a reverse, i don't know why!!!!!
public int cbOutQue;
public int cbInQue;
public int fReserved;
public int fTxim;
public int fEof;
public int fXoffSent;
public int fXoffHold;
public int fRlsdHold;
public int fDsrHold;
public int fCtsHold;
}
#if FULLFRAMEWORK
[DllImport("kernel32")]
private static extern int CreateFile(
string lpFileName, // file name
uint dwDesiredAccess, // access mode
int dwShareMode, // share mode
int lpSecurityAttributes, // SD
int dwCreationDisposition, // how to create
int dwFlagsAndAttributes, // file attributes
int hTemplateFile // handle to template file
);
#else
[DllImport("kernel32")]
private static extern int CreateFile(
string lpFileName, // file name
uint dwDesiredAccess, // access mode
int dwShareMode, // share mode
int lpSecurityAttributes, // SD
int dwCreationDisposition, // how to create
uint dwFlagsAndAttributes, // file attributes
int hTemplateFile // handle to template file
);
#endif
#if FULLFRAMEWORK
[DllImport("kernel32")]
private static extern bool GetCommState(
int hFile, // handle to communications device
ref DCB lpDCB // device-control block
);
#else
//取得並口狀態
[DllImport("kernel32")]
private static extern bool GetCommState(
int hFile, // handle to communications device
ref DCB lpDCB // device-control block
);
#endif
#if FULLFRAMEWORK
[DllImport("kernel32")]
private static extern bool BuildCommDCB(
string lpDef, // device-control string
ref DCB lpDCB // device-control block
);
#else
[DllImport("kernel32")]
private static extern bool BuildCommDCB(
string lpDef, // device-control string
ref DCB lpDCB // device-control block
);
#endif
#if FULLFRAMEWORK
[DllImport("kernel32")]
private static extern bool SetCommState(
int hFile, // handle to communications device
ref DCB lpDCB // device-control block
);
#else
[DllImport("kernel32")]
private static extern bool SetCommState(
int hFile, // handle to communications device
ref DCB lpDCB // device-control block
);
#endif
#if FULLFRAMEWORK
[DllImport("kernel32")]
private static extern bool GetCommTimeouts(
int hFile, // handle to comm device
ref COMMTIMEOUTS lpCommTimeouts // time-out values
);
#else
[DllImport("kernel32")]
private static extern bool GetCommTimeouts(
int hFile, // handle to comm device
ref COMMTIMEOUTS lpCommTimeouts // time-out values
);
#endif
#if FULLFRAMEWORK
[DllImport("kernel32")]
private static extern bool SetCommTimeouts(
int hFile, // handle to comm device
ref COMMTIMEOUTS lpCommTimeouts // time-out values
);
#else
[DllImport("kernel32")]
private static extern bool SetCommTimeouts(
int hFile, // handle to comm device
ref COMMTIMEOUTS lpCommTimeouts // time-out values
);
#endif
#if FULLFRAMEWORK
[DllImport("kernel32")]
private static extern bool ReadFile(
int hFile, // handle to file
byte[] lpBuffer, // data buffer
int nNumberOfBytesToRead, // number of bytes to read
ref int lpNumberOfBytesRead, // number of bytes read
ref OVERLAPPED lpOverlapped // overlapped buffer
);
#else
[DllImport("kernel32")]
private static extern bool ReadFile(
int hFile, // handle to file
byte[] lpBuffer, // data buffer
int nNumberOfBytesToRead, // number of bytes to read
ref int lpNumberOfBytesRead, // number of bytes read
ref OVERLAPPED lpOverlapped // overlapped buffer
);
#endif
#if FULLFRAMEWORK
[DllImport("kernel32")]
private static extern bool WriteFile(
int hFile, // handle to file
byte[] lpBuffer, // data buffer
int nNumberOfBytesToWrite, // number of bytes to write
ref int lpNumberOfBytesWritten, // number of bytes written
ref OVERLAPPED lpOverlapped // overlapped buffer
);
#else
[DllImport("kernel32")]
private static extern bool WriteFile(
int hFile, // handle to file
byte[] lpBuffer, // data buffer
int nNumberOfBytesToWrite, // number of bytes to write
ref int lpNumberOfBytesWritten, // number of bytes written
ref OVERLAPPED lpOverlapped // overlapped buffer
);
#endif
#if FULLFRAMEWORK
[DllImport("kernel32")]
private static extern bool CloseHandle(
int hObject // handle to object
);
#else
[DllImport("kernel32")]
private static extern bool CloseHandle(
int hObject // handle to object
);
#endif
#if FULLFRAMEWORK
[DllImport("kernel32")]
private static extern bool ClearCommError(
int hFile, // handle to file
ref int lpErrors,
ref COMSTAT lpStat
);
#else
[DllImport("kernel32")]
private static extern bool ClearCommError(
int hFile, // handle to file
ref int lpErrors,
ref COMSTAT lpStat
);
#endif

[hunter_32]

#if FULLFRAMEWORK
[DllImport("kernel32")]
private static extern bool PurgeComm(
int hFile, // handle to file
uint dwFlags
);
#else
[DllImport("kernel32")]
private static extern bool PurgeComm(
int hFile, // handle to file
uint dwFlags
);
#endif
#if FULLFRAMEWORK
[DllImport("kernel32")]
private static extern bool SetupComm(
int hFile,
int dwInQueue,
int dwOutQueue
);
#else
[DllImport("kernel32")]
private static extern bool SetupComm(
int hFile,
int dwInQueue,
int dwOutQueue
);
#endif

#if FULLFRAMEWORK
[DllImport("kernel32")]
private static extern bool SetCommMask(
int hFile,
int dwEvtMask //梓隴岈璃腔栚鎢
);
#else
[DllImport("kernel32")]
private static extern bool SetCommMask(
int hFile,
int dwEvtMask //表明事件的掩碼
);
#endif

#if FULLFRAMEWORK
[DllImport("kernel32")]
private static extern bool WaitCommEvent(
int hFile,
ref int lpEvtMask,
ref OVERLAPPED lpOverlapped

);
#else
[DllImport("kernel32")]
private static extern bool WaitCommEvent(
int hFile,
int dwEvtMask,
ref OVERLAPPED lpOverlapped
);
#endif

#if FULLFRAMEWORK
[DllImport("kernel32")]
private static extern int CreateEvent(
int lpSecurityAttributes,
bool bManualReset,
bool bInitialState,
string lpName
);
#else
[DllImport("kernel32")]
private static extern int CreateEvent(

int lpSecurityAttributes,
bool bManualReset,
bool bInitialState,
string lpName
);
#endif
//private static extern int
#endregion

// SerialPort成員
private int hComm = INVALID_HANDLE_VALUE;
private bool bOpened = false; //標志並口初始化成功與否的標志

public bool Opened //用屬性返回標志變量
{
get
{
return bOpened;
}
}